地平说学会（英语：Flat Earth Society）又称国际地平说学会（英语：International Flat Earth Society）或者国际地平说考证学会（英语：International Flat Earth Research Society），是一个支持地平说，反对地圆说的组织，由英国人塞缪尔·申顿于1956年创建。而后这个组织的领导人变为查尔斯·K·约翰逊，约翰逊将地平说学会的中心置于自己于加州兰开斯特的家中。地平说学会自约翰逊于2001年去世后，便变得不活跃，但又重新于2004年再次活跃起来，全因其新会长丹尼尔·申顿于网络上设置了一个讨论区。 地平说学会在约翰逊领导下的最盛时有多达3,000名会员。

Modern flat Earth hypotheses originated with the English writer Samuel Rowbotham (1816–1884). Based on his conclusions derived from the Bedford Level experiment, Rowbotham published a 16-page pamphlet, Zetetic Astronomy, which he later expanded into a 430-page book, Earth Not a Globe, in which the Earth is a flat disc centred at the North Pole and bounded along its southern edge by a wall of ice (Antarctica), with the Sun and Moon 3,000 miles (4,800 km) and the "cosmos" 3,100 miles (5,000 km) above Earth. He also published a leaflet entitled "The inconsistency of Modern Astronomy and its Opposition to the Scriptures!!", which argued that the "Bible, alongside our senses, supported the idea that the earth was flat and immovable and this essential truth should not be set aside for a system based solely on human conjecture".